London penetration depth josephson

The dark shading represents low current density, where as the bright areas exhibit high current density. These results are quite significant, as NbSe 2 has up to now been generally regarded as a multi-gap superconductor 22 , Additional information How to cite this article: The dashed line is calculated from BCS theory. Evolution of interlayer coupling in twisted molybdenum disulfide bilayers.

Choose an option to locate/access this article:

Supercurrent in van der Waals Josephson junction

A polymethyl methacrylate e-beam resist was subsequently spin coated onto the wafer and kept in a vacuum desiccator for at least an hour to remove any solvent. Check if you have access through your login credentials or your institution. This is supported by the existence of adsorbed material at the vdW gap between NbSe 2 flakes, as detected by energy dispersive X-ray spectroscopy measurement Supplementary Note 3 and Supplementary Fig. Indeed, many high-performance electronic devices based on a vdW heterostructure have already been demonstrated, including vertical field-effect transistors 4 , 5 , devices exhibiting strong light—matter interaction 6 , 7 and ballistic Josephson junctions 8. Features restricted to a self-consistent calculation are discussed. The single pair of peaks also suggests that there is only one superconducting gap contributing to the total conductance; the energy gap is plotted against temperature in Fig. Abstract Supercurrent flow between two superconductors with different order parameters, a phenomenon known as the Josephson effect, can be achieved by inserting a non-superconducting material between two superconductors to decouple their wavefunctions.

Anisotropy of the London penetration depth in layered superconductors - IOPscience

For comparison, we plot the Kulik-Omelyanchouk result Ref. For this figure, parameters are set corresponding to Fig. A Type II superconductor is also a perfect conductor of electricity with zero dc resistance, but its magnetic properties are more complex. Supplementary Material Supplementary Information: By continuing to use this site you agree to our use of cookies.

When in a superconducting state as depicted in Fig. For comparison, we plot the Kulik-Omelyanchouk result Ref. From the optical micrograph shown in Fig. The constriction is defined by the parameters l and w. Strong light-matter interactions in heterostructures of atomically thin films. The Fraunhofer pattern for the critical current of a Josephson junction is given as